#include<stdio.h>

int Sum(int s,int e)
{
    int sum = 0;
    int i = 0;
    for(i = s;i <= e;i++)
    {
        sum+=i;
    }
    return sum;
}

int main()
{
    printf("process is running\n");
    int start = 1;
    int end = 100;
    int result = Sum(start,end);
    printf("process is done,result is %d",result);

    return 0;
}
